How do I re install Amnesia?

[marni13]

I tried reinstalling Amnesia from the original message sent to me after purchasing on Aug 13, 2012. After waiting for the download to finish, just when there is less than 30 seconds left, I get a message that says ...amnesia_tdd_1.2.zip.part could not be saved, because the source file could not be read. Try again later, or contact the server admin. This would be the 3rd time downloading this game. The first time we downloaded it to my daughter's computer, since she is the one who will be playing it, but her graphics couldn't handle it, so the 2nd try was when we originally installed on this computer. I got a trojan yesterday, and had to wipe the hard drive and reinstall Windows (7, home premium, 64 bit). Does Frictional games need to reset something?